I sent a pm to the op. Looking at load data and running some numbers on the JBM, the 33 Nosler is a tough order for 1000y hunting. More of an 800y hunting rifle. It just doesn't have the hp to get to the 1000y mark well. If we can get the 260g Hammer Hunter to fit in the rifle without single feeding, I would be comfortable hunting with it to 1000y, depending on the altitude. Figuring a conservative 2850 fps mv and standard atmosphere at 4000' elev we would be looking at ~1700 fps impact at 1000y. This bullet with the more slender nose and higher sectional density, I would be comfortable. With the 236g Hammer Hunter I would keep the impact vel min at 1800 fps. Being a fatter nosed bullet with less sectional density, it will not deform properly at as low a vel as the 260g Hammer Hunter. I am figuring that we can get the 236g, conservatively, to 2950 fps. This will put this combo at ~800y for hunting.
Not sure of the mag length of the CA in 33 Nosler, but if we can get them out to 3.6" there is very good potential to push the 260g Hammer Hunter well past the predicted 2850 fps.